Acharya Prashant explains that spirituality is the realization of a human being's highest potential and full expression, rather than an art of weakening or drying up the body. While a spiritual person might appear physically frail due to intense service or difficult life missions, they do not intentionally make themselves sick or weak. He emphasizes that spirituality involves treating one's own body with the same compassion one would show to a tree or an animal. If one is violent toward their own body, they will inevitably be violent toward the world. True spirituality is the ultimate science of health, where there is no place for weakness, as the Upanishads state that the Soul cannot be attained by the weak.